Balanced PIN-TIA photoreceiver with integrated 3 dB fiber coupler for distributed fiber optic sensors

Shubhashish Datta; Sruti Rajagopalan; Shaun Lemke; Abhay Joshi

doi:10.1117/12.2050325

18 June 2014 Balanced PIN-TIA photoreceiver with integrated 3 dB fiber coupler for distributed fiber optic sensors

Shubhashish Datta, Sruti Rajagopalan, Shaun Lemke, Abhay Joshi

Author Affiliations +

Proceedings Volume 9098, Fiber Optic Sensors and Applications XI; 90980Y (2014) https://doi.org/10.1117/12.2050325
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

We report a balanced PIN-TIA photoreceiver integrated with a 3 dB fiber coupler for distributed fiber optic sensors. This detector demonstrates -3 dB bandwidth >15 GHz and coupled conversion gain >65 V/W per photodiode through either input port of the 3 dB coupler, and can be operated at local oscillator power of +17 dBm. The combined common mode rejection of the balanced photoreceiver and the integrated 3 dB coupler is >20 dB. We also present measurement results with various optical stimuli, namely impulses, sinusoids, and pseudo-random sequences, which are relevant for time domain reflectometry, frequency domain reflectometry, and code correlation sensors, respectively.

Citation Download Citation

Shubhashish Datta, Sruti Rajagopalan, Shaun Lemke, and Abhay Joshi "Balanced PIN-TIA photoreceiver with integrated 3 dB fiber coupler for distributed fiber optic sensors", Proc. SPIE 9098, Fiber Optic Sensors and Applications XI, 90980Y (18 June 2014); https://doi.org/10.1117/12.2050325

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